CN112614427A

CN112614427A - Display panel and cutting panel

Info

Publication number: CN112614427A
Application number: CN202011379142.5A
Authority: CN
Inventors: 李雪
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-04-06
Anticipated expiration: 2040-11-30
Also published as: CN112614427B

Abstract

The invention discloses a display panel and a cutting panel, and relates to the technical field of display. The display panel comprises a non-display area and at least one crack detection circuit, wherein the crack detection circuit comprises a crack detection signal line, a crack detection unit and at least one built-in electrostatic protection element, and the built-in electrostatic protection element is electrically connected with the crack detection signal line; the built-in electrostatic protection element comprises an electrostatic protection capacitor module; the crack detection unit is positioned in the first sub non-display area, and at least part of the electrostatic protection capacitor module is positioned in the second sub non-display area and/or the third sub non-display area; the first sub non-display area and the second sub non-display area are oppositely arranged. The plurality of electrostatic protection capacitor modules are arranged outside the first sub non-display area, so that the situation that an element for releasing static electricity is arranged in the first sub non-display area with a small space is avoided, more electrostatic protection capacitor modules are electrically connected to the crack detection signal line, and the electrostatic release capacity of the crack detection signal line is improved.

Description

Display panel and cutting panel

Technical Field

The invention relates to the technical field of display, in particular to a display panel and a cutting panel.

Background

In the prior art, in the design of the display panel, structural components such as a driving chip and a driving circuit are often arranged in a lower frame region, but at present, components for releasing static electricity are still arranged in the lower frame region at positions before crack detection signal lines enter a crack detection unit, so that the components for releasing static electricity are intensively arranged in the lower frame region, a sufficient number of static electricity releasing components cannot be arranged, static electricity existing on the crack detection signal lines cannot be sufficiently dissipated, and the problem that static electricity breaks through the crack detection unit cannot be avoided. Therefore, it is desirable to provide a display panel capable of disposing a larger number of electrostatic discharge devices to ensure the normality of the crack detection circuit and further ensure the accuracy of crack detection by the crack detection circuit.

Disclosure of Invention

In view of the above, the present invention provides a display panel and a cutting panel, so as to solve the problem that the static electricity existing on the crack detection signal line cannot be dissipated sufficiently because the lower frame region of the display panel cannot be provided with a sufficient number of static electricity dissipation devices.

In a first aspect, the present application provides a display panel, including a display area and a non-display area surrounding the display area, where the non-display area includes at least one crack detection circuit, and any crack detection circuit includes a crack detection signal line, a crack detection unit, and at least one built-in electrostatic protection element, and the built-in electrostatic protection element is electrically connected to the crack detection signal line;

any built-in electrostatic protection element comprises at least one electrostatic protection capacitor module;

the non-display area comprises a first sub non-display area, a second sub non-display area and a third sub non-display area which are oppositely arranged; the crack detection unit is located in the first sub non-display area, and at least part of the electrostatic protection capacitor module is located in the second sub non-display area and/or the third sub non-display area.

In a second aspect, the present application provides a cut panel comprising the display panel;

the cutting panel comprises an empty area, and the empty area at least partially surrounds the display panel; the input end of the crack detection signal wire extends to the vacant area, and at least one output end of the crack detection signal wire extends to the vacant area;

the vacant area comprises at least one external electrostatic protection element electrically connected with the output end.

Compared with the prior art, the display panel and the cutting panel provided by the invention at least realize the following beneficial effects:

the application provides a display panel and a cutting panel, wherein a crack detection signal wire of a crack detection circuit arranged in a non-display area is electrically connected with a plurality of built-in electrostatic protection elements, each built-in electrostatic protection element comprises at least one electrostatic protection capacitor module, a crack detection unit connected with the crack detection signal wire is arranged in a first sub non-display area, and the plurality of electrostatic protection capacitor modules are arranged in the rest non-display areas outside the first sub non-display area; through avoiding setting up the components and parts of releasing static in the less first sub-non-display area in space, and realized that a crack detection signal line electricity connects a plurality of electrostatic protection capacitance module, be favorable to improving the electrostatic discharge ability to crack detection signal line, and can ensure crack detection circuit's normal, further ensured crack detection circuit check whether have the accuracy of crackle in the display panel display area.

Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic view of a display panel according to an embodiment of the present disclosure;

FIG. 2 is an enlarged view of the area M in FIG. 1 according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of AA' of FIG. 2 according to an embodiment of the present application;

FIG. 4 is another enlarged view of the area M in FIG. 1 according to an embodiment of the present disclosure;

FIG. 5 is a cross-sectional view of BB' of FIG. 4 according to an embodiment of the present disclosure;

fig. 6 is another schematic view of a display panel according to an embodiment of the present disclosure;

FIG. 7 is an enlarged view of the area N in FIG. 6 according to an embodiment of the present disclosure;

FIG. 8 is an enlarged view of the area M' in FIG. 6 according to an embodiment of the present application;

FIG. 9 is an enlarged view of the area X in FIG. 6 according to an exemplary embodiment of the present disclosure;

fig. 10 is a schematic view of a cutting panel according to an embodiment of the present disclosure;

FIG. 11 is an enlarged view of the area Y in FIG. 10 according to an exemplary embodiment of the present disclosure;

FIG. 12 is an enlarged view of the area Y in FIG. 10 according to an embodiment of the present application;

FIG. 13 is an enlarged view of the area Y in FIG. 10 according to an embodiment of the present disclosure;

FIG. 14 is a further enlarged view of the area Y in FIG. 10 according to an exemplary embodiment of the present disclosure;

fig. 15 is a further enlarged view of the area Y in fig. 10 according to an embodiment of the present application.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Fig. 1 is a schematic diagram of a display panel according to an embodiment of the present application, fig. 2 is an enlarged view of an area M in fig. 1 according to an embodiment of the present application, and referring to fig. 1 and fig. 2, the present application provides a display panel 100, which includes a display area 10 and a non-display area 20 surrounding the display area 10, the non-display area 20 includes at least one crack detection circuit 30, each crack detection circuit 30 includes a crack detection signal line 31, a crack detection unit 32 and at least one built-in electrostatic protection element 33, and the built-in electrostatic protection element 33 is electrically connected to the crack detection signal line 31;

as shown in fig. 2, any of the esd protection components 33 includes at least one esd protection capacitor module 331;

the non-display area 20 comprises a first sub non-display area 201, a second sub non-display area 202 and a third sub non-display area 203 which are oppositely arranged; the crack detection unit 32 is located in the first sub non-display area 201, and at least a portion of the esd protection capacitor module 331 is located in the second sub non-display area 202 and/or the third sub non-display area 203.

Specifically, referring to fig. 1, the present application provides a display panel 100, where the display panel 100 includes a display area 10 and a non-display area 20, where the non-display area 20 is disposed around the display area 10; at least one crack detection circuit 30 is disposed in the non-display area 20 for detecting whether cracks exist in the display area 10 of the display panel 100 to avoid the situation that the manufactured display panel 100 has defective products.

The crack detection circuit 30 in the non-display area 20 of the display panel 100 provided by the present application at least includes a crack detection signal line 31, a crack detection unit 32 and at least one built-in electrostatic protection element 33, wherein the crack detection signal line 31 at least partially surrounds the display area 10, the built-in electrostatic protection element 33 is electrically connected to the crack detection signal line 31, and is configured to store electrostatic charges generated by the crack detection signal line 31 arranged in a long winding due to external friction, and slowly eliminate static electricity existing on the crack detection signal line 31 to a certain extent, thereby avoiding the occurrence of the situation that the crack detection unit 32 is broken down by static electricity, and facilitating the protection of the work yield of the whole crack detection circuit 30.

It should be further noted that the non-display area 20 of the display panel 100 provided by the present application includes a first sub non-display area 201 and a second sub non-display area 202 that are oppositely disposed, and the other area except the first sub non-display area 201 and the second sub non-display area 202 is a third sub non-display area 203; in the present application, the crack detection unit 32 of the crack detection circuit 30 is disposed in the first sub non-display area 201, where the first sub non-display area 201 is a side area where the driving chip is usually disposed in the display panel 100, and in addition, at least a part of the built-in electrostatic protection component 33 may be selectively disposed in the second sub non-display area 202 and/or the third sub non-display area 203; however, the present application is not limited thereto, and the internal esd protection device 33 may also be partially disposed in the first sub non-display area 201.

It should be noted that the ellipses between two adjacent internal esd protection elements 33 in fig. 1 indicate that at least one internal esd protection element 33 is further included between two adjacent internal esd protection elements 33. In the present application, a plurality of built-in electrostatic protection elements 33 are electrically connected to the crack detection signal line 31 disposed in the non-display area 20 of the display panel 100, and the built-in electrostatic protection elements 33 store electrostatic charges existing in the crack detection signal line 31, so as to slowly eliminate at least a portion of the electrostatic charges existing on the crack detection signal line 31, so as to protect the service life of the crack detection circuit 30, in combination with fig. 2 on the basis of fig. 1.

Since the first sub non-display area 201 of the current display panel 100 itself is also provided with a plurality of driving chips, a plurality of driving circuit lines, a plurality of flexible circuit boards, and other components, after the crack detection unit 32 is disposed in the first sub non-display area 201, there is not particularly enough space for disposing the plurality of esd protection capacitor modules 331; therefore, in the present application, the esd protection capacitor modules 331 included in the internal esd protection element 33 are disposed in the second sub non-display area 202 and/or the third sub non-display area 203 more, so that the disposed plurality of esd protection capacitor modules 331 are far away from the first sub non-display area 201, thereby satisfying the requirement of disposing a greater number of esd protection capacitor modules 331, facilitating to increase the dissipation path of static electricity to a greater extent, preventing the crack detection circuit 30 from being damaged by static electricity, and further ensuring the accuracy of the crack detection circuit 30 in checking cracks.

Fig. 3 is a cross-sectional view of AA' in fig. 2 according to an embodiment of the present disclosure, referring to fig. 1-3, optionally, any esd protection capacitor module 331 includes at least one capacitor element 34;

along the light emitting direction of the display panel 100, the display panel 100 includes a substrate 41, and an active layer 42, a first metal layer 43 and a second metal layer 44 sequentially disposed on the substrate 41; at least part of the active layer 42 and at least part of the first metal layer 43 form the capacitive part 34, and/or at least part of the first metal layer 43 and at least part of the second metal layer 44 form the capacitive part 34;

wherein the active layer 42 and the second metal layer 44 are electrically connected through a first via 45.

Specifically, any esd protection capacitor module 331 serving as an esd protection device of the crack detection circuit 30 at least includes a capacitor element 34, and the capacitor element 34 is used to reduce the accumulation of static electricity during the manufacturing process. As shown in fig. 3, in a direction along the light emitting surface of the display panel 100, the display panel 100 includes a substrate 41, and an active layer 42, a first metal layer 43, and a second metal layer 44 sequentially disposed on one side of the substrate 41; here, the capacitor 34 is formed in a region where at least a part of the first metal layer 43 and at least a part of the active layer 42 overlap in an orthographic projection on the substrate 41, or the capacitor 34 may be formed in a region where at least a part of the first metal layer 43 and at least a part of the second metal layer 44 overlap in an orthographic projection on the substrate 41. And then, the active layer 42 and the second metal layer 44 are electrically connected, so that the capacitor element 34 formed by at least part of the first metal layer 43 and at least part of the active layer 42, and the capacitor element 34 formed by at least part of the first metal layer 43 and at least part of the second metal layer 44 are electrically connected, thereby forming a complete esd protection capacitor module 331.

It should be noted that fig. 3 simply illustrates the substrate 41, the active layer 42, the first metal layer 43, the second metal layer 44 and the first via 45 included in the cross-sectional view of AA' in fig. 2, and does not illustrate other film layers included between two adjacent film layers, for example, an insulating layer may be included between the first metal layer 43 and the second metal layer 44, and a gate insulating layer and the like may be included between the active layer 42 and the first metal layer 43; the filling material or structure between two adjacent film layers can be adjusted by those skilled in the art according to the requirement.

Any one of the esd protection capacitor modules 331 provided by the present application may be composed of one capacitor 34 or a plurality of capacitors 34, and when the esd protection capacitor module 331 composed of a plurality of capacitors 34 (for example, two capacitors 34 shown in fig. 3) is electrically connected to the crack detection signal line 31, the esd protection capacitor module has a better effect on storing and slowly eliminating the static electricity on the crack detection signal line 31, thereby being beneficial to preventing the crack detection circuit 30 from being damaged by the static electricity to cause the abnormality of the crack detection circuit 30, and ensuring the accuracy of crack detection by the crack detection circuit 30.

Fig. 4 is another enlarged view of the region M in fig. 1 according to an embodiment of the present disclosure, fig. 5 is a cross-sectional view of BB' in fig. 4 according to an embodiment of the present disclosure, please refer to fig. 1, fig. 4-fig. 5, and optionally, any one of the esd protection capacitor modules 331 further includes a first capacitor 50;

the display panel 100 includes a third metal layer 46 located on a side of the second metal layer 44 away from the first metal layer 43, at least a portion of the third metal layer 46 and at least a portion of the first metal layer 43 form a first capacitor 50, and the third metal layer 46 and the second metal layer 44 are electrically connected through a second via 47.

Specifically, in addition to the capacitor element 34, any one of the esd protection capacitor modules 331 may further include a first capacitor 50 for enhancing the electrostatic discharge capability of one of the esd protection capacitor modules 331 with respect to the crack detection signal line 31. In the direction along the light emitting surface of the display panel 100, the display panel 100 includes a substrate 41, an active layer 42, a first metal layer 43, a second metal layer 44 sequentially disposed on one side of the substrate 41, and a third metal layer 46 disposed on one side of the second metal layer 44 away from the first metal layer 43. Wherein, at least a part of the first metal layer 43 and at least a part of the active layer 42 have an overlapped region on the substrate 41 to form the capacitor element 34, and/or at least a part of the first metal layer 43 and at least a part of the second metal layer 44 have an overlapped region on the substrate 41 to form the capacitor element 34, and further at least a part of the third metal layer 46 and at least a part of the first metal layer 43 form the first capacitor 50, so that the third metal layer 46 and the second metal layer 44 are electrically connected, and the first capacitor 50 and the capacitor element 34 are electrically connected to form a complete electrostatic protection capacitor module 331, thereby further increasing the electrostatic discharge capacity of one electrostatic protection capacitor module 331 for the crack detection signal line 31 electrically connected thereto.

It should be noted that, in the BB' cross-sectional view of fig. 4 shown in fig. 5, only the included substrate 41, the active layer 42, the first metal layer 43, the second metal layer 44, the third metal layer 46, the first via 45, and the second via 47 are shown in a simplified manner, and other film layers included between two adjacent film layers are not shown, for example, an insulating layer may be included between the first metal layer 43 and the second metal layer 44, a gate insulating layer may be included between the active layer 42 and the first metal layer 43, and an insulating layer and the like may be included between the third metal layer 46 and the second metal layer 44; the filling material or structure between two adjacent film layers can be adjusted by those skilled in the art according to the requirement.

Referring to fig. 1, fig. 2 and fig. 4, optionally, the esd protection capacitor module 331 is electrically connected to the crack detection signal line 31 through at least two connection signal lines 48;

the connection signal line 48 may be disposed on the second metal layer 44 and electrically connected to the first metal layer 43 of the esd protection capacitor module 331 through the third via 49.

Specifically, when the esd protection capacitor module 331 is electrically connected to the crack detection signal line 31, two connection signal lines 48 may be selectively used, specifically, referring to fig. 4, one esd protection capacitor module 331 includes a first end 901 and a second end 902, where the first connection signal line 481 is disposed on the second metal layer 44 and electrically connected to the first end 901 of the esd protection capacitor module 331, and the second connection signal line 482 is also disposed on the second metal layer 44 and electrically connected to the second end 902 of the esd protection capacitor module 331; the connection signal lines 48 disposed in the second metal layer 44 are electrically connected to the first metal layer 43 of the esd protection capacitor module 331 connected thereto through the third vias 49; therefore, an electric signal transmission path between the electrostatic protection capacitor module 331 and the crack detection signal line 31 is realized, partial static electricity existing on the crack detection signal line 31 of the crack detection circuit 30 during working can be transmitted to the electrostatic protection capacitor module 331 through the connection signal line 48 and released, the crack detection circuit 30 is prevented from being abnormal due to electrostatic damage to the crack detection circuit 30, and the accuracy of crack detection of the crack detection circuit 30 is further ensured.

Fig. 6 is another schematic diagram of the display panel according to the embodiment of the present application, and fig. 7 is an enlarged view of an N region in fig. 6 according to the embodiment of the present application, please refer to fig. 6 and fig. 7, optionally, the crack detection unit 32 includes a first power voltage signal line 51, and the second metal layer 44 of the esd protection capacitor module 331 is electrically connected to the first power voltage signal line 51.

Specifically, for example, when the esd protection capacitor module 331 (the internal esd protection device 33) is disposed in the first sub-non-display area 201, specifically, all the esd protection capacitor modules 331 located in the first sub-non-display area 201 in one crack detection circuit 30 are connected to the first power voltage signal line 51 through one signal connection line 53, one end of the signal connection line 53 is connected to the second metal layers 44 of the plurality of esd protection capacitor modules 331, and the other end is connected to the first power voltage signal line 51, where the first power voltage signal line 51 is used to transmit a stable voltage to the capacitor plates of the esd protection capacitor module 331 electrically connected thereto, and when there is electrostatic charge in the crack detection signal line 31, a certain voltage difference is generated between the capacitor plates of the esd protection capacitor module 331 electrically connected to the crack detection signal line 31 and the capacitor plates of the esd protection capacitor module 331 electrically connected to the first power voltage signal line 51, further, the electrostatic protection capacitor module 331 can be used to store the electrostatic charges on the crack detection signal line 31 and slowly release part of the electrostatic charges on the crack detection signal line 31; the method is beneficial to realizing the release of at least part of static electricity in the gate drive circuit, avoiding the abnormality of the crack detection circuit 30 caused by the electrostatic damage of the crack detection circuit 30, and being beneficial to maintaining the normal transmission of voltage signals in the display panel 100, thereby ensuring the accuracy of crack detection of the crack detection circuit 30.

Referring to fig. 1 and 4, optionally, the non-display area 20 further includes a plurality of cascaded gate driving circuits (not shown), the gate driving circuits include a second power voltage signal line 52, and the second metal layer 44 of the esd protection capacitor module 331 is electrically connected to the second power voltage signal line 52.

Specifically, the non-display area 20 of the display panel 100 further includes a plurality of cascaded gate driving circuits, each gate driving circuit includes a second power voltage signal line 52, for example, when the esd protection capacitor module 331 is disposed in the second sub-non-display area 202 or the third sub-non-display area 203, each esd protection capacitor module 331 is electrically connected to the second power voltage signal line 52 of the gate driving circuit, specifically, the second metal layer 44 of each esd protection capacitor module 331 is electrically connected to one signal connection line 53 located in the first metal layer 43 through a third via 49, and the signal connection line 53 is further connected to the second power voltage signal line 52 located in the second metal layer 44 through the third via 49, so as to electrically connect the esd protection capacitor module 331 located in the second sub-non-display area 202 and the third sub-non-display area 203 to the gate driving circuit.

Since the crack detection signal line 31 and the second power voltage signal line 52 are applied with equipotential high-level signals during the operation of the display panel 100, the crack detection signal line 31 disposed by the long winding generates a certain electrostatic charge due to external friction, the electrostatic protection capacitor module 331 electrically connected to the crack detection signal line 31 is further electrically connected to the second power voltage signal line 52 in the gate driving circuit, when the crack detection signal line 31 generates static electricity, the electrostatic protection capacitor module 331 has a certain voltage difference between the plate connected to the crack detection signal line 31 and the plate connected to the second power voltage signal line 52, so that the electrostatic protection capacitor module 331 can store the electrostatic charge generated on the crack detection signal line 31, and further, the voltage difference between the plate connected to the crack detection signal line 31 and the plate connected to the second power voltage signal line 52 tends to zero The discharge of the electrostatic charge on the crack detection signal line 31 is realized. That is, the second power voltage signal line 52 is used to provide a stable potential to the esd protection capacitor module 331, so that when electrostatic charges are generated on the crack detection signal line 31, a voltage difference between the plates of the esd protection capacitor module 331 exists, the esd protection capacitor module 331 is used to store and release the electrostatic charges on the crack detection signal line 31, and can release at least part of the electrostatic charges in the gate driving circuit, thereby facilitating the maintenance of the normal transmission of the voltage signal in the display panel 100, and facilitating the improvement of the normal display effect of the display panel 100.

It should be noted that the setting manner shown in fig. 4 in which the second power voltage signal line 52 included in the gate driving circuit is used to provide a stable potential for the esd protection capacitor module 331 is only an alternative embodiment provided in the present application, and the present application is not limited thereto; the stable potential of the esd protection capacitor module 331 can be realized by other feasible circuit configurations, as long as when electrostatic charges are generated on the crack detection signal line 31, a certain voltage difference is generated between the plates of the esd protection capacitor module 331, so as to realize the storage and release functions of the esd protection capacitor module 331 for the electrostatic charges.

With continued reference to fig. 1 and 4, optionally, the crack detection signal line 31 includes a first sub-crack detection signal line 311 and a second sub-crack detection signal line 312, the second sub-crack detection signal line 312 is located between the display area 10 and the first sub-crack detection signal line 311, and one end of the first sub-crack detection signal line 311 is electrically connected to one end of the second sub-crack detection signal line 312;

any one of the esd protection components 33 includes a first esd protection capacitor module 3311 and a second esd protection capacitor module 3312, wherein the first esd protection capacitor module 3311 is electrically connected to the first sub-crack detection signal line 311, and the second esd protection capacitor module 3312 is electrically connected to the second sub-crack detection signal line 312.

Specifically, the crack detection signal line 31 located in the non-display area 20 includes a first sub-crack detection signal line 311 and a second sub-crack detection signal line 312, the second sub-crack detection signal line 312 is closer to the display area 10 than the first sub-crack detection signal line 311, that is, the second sub-crack detection signal line 312 is located between the display area 10 and the first sub-crack detection signal line 311, and one end of the first sub-crack detection signal line 311 and one end of the second sub-crack detection signal line 312 are connected inside the non-display area 20, so that the first sub-crack detection signal line 311 and the second sub-crack detection signal line 312 form an at least partial loop structure.

Any one of the esd protection components 33 may include two esd protection capacitor modules 331, for example, one of the esd protection components 33 may include a first esd protection capacitor module 3311 and a second esd protection capacitor module 3312, and at this time, the first esd protection capacitor modules 3311 included in the esd protection components 33 may be electrically connected to the first sub-crack detection signal line 311, and the second esd protection capacitor modules 3312 may be electrically connected to the second sub-crack detection signal line 312; that is, at least one esd protection capacitor module in one esd protection device 33 is connected to the first sub-crack detection signal line 311, and at least one esd protection capacitor module is connected to the second sub-crack detection signal line 312; with such an arrangement, the plurality of electrostatic protection capacitor modules 331 arranged in one extending direction can be alternately connected with the first sub-crack detection signal line 311 and the second sub-crack detection signal line 312, so that the electrostatic protection capacitor modules 331 arranged on the crack detection signal line 31 are more uniform, the electrostatic discharge capacity of the electrostatic generated by the crack detection signal line 31 is more balanced, and the occurrence of the poor electrostatic discharge condition in a certain part of the crack detection signal line 31 is avoided.

Referring to fig. 6 and 8, an enlarged view of an area M' in fig. 6 is shown, wherein, optionally, the first esd protection capacitor module 3311 and the second esd protection capacitor module 3312 of the at least one esd protection device 33 are connected in parallel according to an embodiment of the present application.

Specifically, when the first esd protection capacitor module 3311 and the first sub-crack detection signal line 311 in the same esd protection device 33 are connected, and the second esd protection capacitor module 3312 and the second sub-crack detection signal line 312 are connected, the first esd protection capacitor module 3311 and the second esd protection capacitor module 3312 may be further connected in parallel; the specific parallel connection details may be that the first vias 45 through which the second metal layer 44 in the first esd protection capacitor module 3311 and the active layer 42 electrically connect are the same group of first vias, and the first vias 45 through which the second metal layer 44 in the second esd protection capacitor module 3312 and the active layer 42 electrically connect are the same group of first vias; in other words, the two esd protection capacitor modules 3311 and 3312 in the same esd protection device 33 are designed to share the connection hole, that is, the signals on the first sub-crack detection signal line 311 and the second sub-crack detection signal line 312 can simultaneously pass through the first esd protection capacitor module 3311 and the second esd protection capacitor module 3312 connected in parallel, so as to save the space of the non-display area 20 required to be used, and simultaneously, the esd release circuit can be fully implemented, thereby improving the protection effect of the crack detection circuit 30.

It should be noted that the second metal layer 44 of the first esd protection capacitor module 3311 and the second esd protection capacitor module 3312, which are disposed in parallel, also needs to be electrically connected to a second power voltage signal line 52, for example, as shown in fig. 4, so that the second power voltage signal line 52 can provide a stable voltage for the capacitor plate of the internal esd protection device 33 connected thereto, when the crack detection signal line 31 electrically connected to the other capacitor plate of the internal esd protection device 33 generates electrostatic charges due to external friction, etc., a certain voltage difference is generated between the plates of the internal esd protection device 33, the internal esd protection device 33 can store and slowly release the electrostatic charges generated on the crack detection signal line 31, which is beneficial to releasing at least part of static electricity in the gate driving circuit, and avoiding the crack detection circuit 30 from being damaged by static electricity, the normal transmission of the voltage signal in the display panel 100 is maintained, ensuring the accuracy of the crack detection circuit 30 in checking cracks.

Referring to fig. 6, optionally, the non-display area 20 includes two crack detection circuits 30, and the two crack detection circuits 30 are symmetrically disposed along the first axis 60;

the display area 10 comprises a plurality of data lines (not shown) extending along the second sub non-display area 202 in a direction pointing to the first sub non-display area 201, wherein the first axis 60 is parallel to any one of the data lines and bisects the display area 10 in a direction perpendicular to the data lines.

Specifically, two crack detection circuits 30 that are bilaterally symmetric as shown in fig. 6 may be disposed in the non-display area 20 of the display panel 100, specifically, the two crack detection circuits 30 are symmetrically disposed along the first axis 60; the display area 10 includes a plurality of data lines (not shown) extending from the second sub non-display area 202 in a direction pointing to the first sub non-display area 201, the first axis 60 and the data lines extend in the same direction, that is, the first axis 60 and any one of the data lines are arranged in parallel, and the first axis 60 bisects the display area 10 in a direction perpendicular to the data lines, where one crack detection circuit 30 is used for detecting the display panel 100 on one side of the first axis 60 in the display area 10, and the other crack detection circuit 30 is used for detecting the display panel 100 on the other side of the first axis 60 in the display area 10.

That is, the crack detection signal line 31 of one crack detection circuit 30 in the non-display area 20 of the display panel 100 is wound around the display area 10 for half a circumference, and the crack phenomenon is detected in regions on the display panel 100, so that the detection pressure of each crack detection circuit 30 can be reduced, and the detection efficiency of the display panel 100 can be improved by performing the detection in the divisional driving manner.

Referring to fig. 9 and fig. 9, which are enlarged views of an area X in fig. 6 according to an embodiment of the present disclosure, optionally, each crack detection circuit 30 includes a built-in esd protection element 33 located in the second sub non-display area 202, and the built-in esd protection element 33 is located on a side of the crack detection signal line 31 close to the first axis 60.

Specifically, any crack detection circuit 30 may further include a built-in electrostatic protection element 33 located in the second sub non-display area 202, the built-in electrostatic protection element 33 located in the second sub non-display area 202 being disposed near a side of the first axis 60, and specifically, the built-in electrostatic protection element 33 located in the second sub non-display area 202 and disposed near the first axis 60 being disposed in a region where the first sub crack detection signal line 311 and the second sub crack detection signal line 312 are connected.

The built-in esd protection device 33 located in the second sub non-display area 202 and close to the first axis 60 is equivalent to being located at the top of the display panel 100 in the viewing angle shown in fig. 6, and can be used to further release part of static electricity on the crack detection signal lines 31, so as to avoid the interference of electric fields between the crack detection signal lines 31 at both sides of the first axis 60, and improve the detection accuracy of the crack detection circuit 30 for the display panel 100.

It should be noted that the second metal layer 44 of the internal esd protection element 33 disposed in the second sub non-display area 202 also needs to be electrically connected to a second power voltage signal line 52, for example, as shown in fig. 4, so that the second power voltage signal line 52 can provide a stable voltage for the capacitor plate of the internal esd protection element 33 connected thereto, when the crack detection signal line 31 electrically connected to the other capacitor plate of the internal esd protection element 33 generates charges due to external friction, etc., a certain voltage difference is generated between the plates of the internal esd protection element 33, the internal esd protection element 33 can store and slowly release the static charges generated on the crack detection signal line 31, which is beneficial to release at least part of static electricity in the gate driving circuit, and avoid the crack detection circuit 30 from being damaged by static electricity to cause the crack detection circuit 30 to be abnormal, the normal transmission of the voltage signal in the display panel 100 is maintained, ensuring the accuracy of the crack detection circuit 30 in checking cracks.

Referring to FIG. 6 and FIG. 8, optionally, the distance between two adjacent built-in ESD protection devices 33 along the extending direction of the crack detection signal line 31 is D1, and D1 is 500 μm or more and 1000 μm or less.

Specifically, in the extending direction of the crack detection signal line 31 disposed along the non-display area 20, the distance between two adjacent internal electrostatic protection elements 33 may be selected to be 500 μm to 1000 μm, and the number of the internal electrostatic protection elements 33 disposed in the non-display area 20 of one display panel 100 may be adjusted according to the area of the non-display area 20, which is not specifically limited in this application.

Referring to FIG. 6 and FIG. 8, optionally, the width of any one of the built-in ESD protection devices 33 is D2, 20 μm D2 μm 30 μm along the direction perpendicular to the extension direction of the crack detection signal line 31.

Specifically, the selectable range of the arrangement width of any of the built-in electrostatic protection elements 33 in the direction perpendicular to the extending direction of the crack detection signal line 31 may be 20 μm to 30 μm; in addition, optionally, at least part of the built-in electrostatic protection element 33 is located on the side of the crack detection signal line 31 close to the display area 10; since there is a certain idle space on the side of the crack detection signal line 31 close to the display area 10 in the non-display area 20 of the lower display panel 100, especially in the corresponding upper frame area and left and right frame areas of the rectangular display panel 100, the present application arranges the built-in electrostatic protection element 33 on the side of the crack detection signal line 31 close to the display area 10, which can fully utilize the space in the non-display area 20 and can also arrange the built-in electrostatic protection element 33 for releasing at least part of the static electricity on the crack detection signal line 31.

Fig. 10 is a schematic diagram of a cutting panel according to an embodiment of the present application, please refer to fig. 10 in conjunction with fig. 1-9, because the narrow frame design of the display panel in the prior art has become a trend, that is, when the internal structure of the display panel is disposed very tightly, the non-display area of the display panel does not necessarily have enough free space for disposing the unit elements for releasing the electrostatic charges on the crack detection signal lines, and it is more difficult to have extra space for disposing the unit elements for releasing the electrostatic charges on the crack detection signal lines in the display area of the display panel; therefore, based on the same inventive concept, the present application provides a manner of disposing the electrostatic discharge element outside the display panel, specifically, when the display panel is still in a state of being uncut on the motherboard or in a state of being incompletely cut, a corresponding electrostatic discharge unit is disposed in an idle area in the motherboard or the cut panel outside the display panel, so as to not occupy or enlarge a space of a non-display area of the display panel, and to implement the inspection of the crack detection circuit 30 on the internal crack of the panel before the display panel is completely cut.

Specifically, the present application also provides a cut panel 200, the cut panel 200 including a display panel 100;

the cutting panel 200 includes a vacant area 70, and the vacant area 70 at least partially surrounds the display panel 100; the input end 61 of the crack detection signal line 31 extends to the vacant area 70, and at least one output end 62 of the crack detection signal line 31 extends to the vacant area 70;

the vacant area 70 includes at least one external electrostatic protection element 63 electrically connected to the output 62.

Specifically, the present application also provides a cutting panel 200, where the cutting panel 200 includes any one of the display panels 100 provided in the present application; the cutting panel 200 includes the vacant areas 70, and the vacant areas 70 at least partially surround the display panel 100, for example, the vacant areas 70 shown in fig. 10 may be disposed around the entire display panel 100, or the vacant areas 70 may be disposed only under the first sub non-display area of the display panel 100; meanwhile, the lower cutting line 99 below the cutting panel 200 is also shown, and the rest cutting lines are arranged along the outermost frame of the display panel, which is not specifically shown here.

The input end 61 of the crack detection signal line 31 in the crack detection circuit 30 may extend to the vacant region 70, and the at least one output end 62 of the crack detection signal line 31 may also extend to the vacant region 70, and optionally, the input end 61 and the at least one output end 62 of the crack detection signal line 31 may extend to the vacant region 70 on the side of the first sub non-display region far from the display region 10; the vacant area 70 includes an external electrostatic protection element 63 electrically connected to at least one output terminal 62 of the crack detection signal line 31.

The external electrostatic protection element 63 is arranged on the outer side of the lower cutting line 99 of the display panel 100, so that when the display panel 100 does not perform crack detection on the display panel 100, the external electrostatic protection element 63 arranged in the vacant region 70 on the outer side of the display panel 100 can release static electricity existing in the crack detection signal line 31. The crack detection circuit 30 can be used for detecting the internal cracks of the display panel before the display panel is completely cut without occupying or increasing the space of the non-display area of the display panel.

It should be noted that, when the display panel 100 is not cut along the cutting lines (e.g., at least one lower cutting line 99 shown in fig. 10), that is, at least a portion of the vacant region 70 is included, or when the display panel 100 is still located on a motherboard, the external electrostatic protection component 63 may be selectively connected to only at least one output end 62 of the crack detection signal line 31 extending to the vacant region 70, so as to discharge static electricity generated on the crack detection signal line 31 during the operation of the crack detection circuit 30; the display panel 100 may further include at least one external esd protection element 63 on the basis of a plurality of internal esd protection elements disposed in the non-display area of the display panel 100, so that the crack detection signal line 31 can be further discharged without cutting the display panel 100.

Fig. 11 is an enlarged view of the area Y in fig. 10 according to an embodiment of the present application, referring to fig. 10 and fig. 11 based on fig. 1 to fig. 9, and optionally, the external esd protection device 63 includes an esd protection circuit 631, where the esd protection circuit 631 includes a sub-power voltage signal line 72, a sub-crack detection signal line 71, a sub-control signal line 73, and a plurality of dummy signal lines 74;

the crack detection unit 32 includes a first power supply voltage signal line 51, at least one first crack detection signal line 75, and a first control signal line 76;

one output end 62 of the crack detection signal line 31 is electrically connected to one end of the sub-crack detection signal line 71, the other output end of the crack detection signal line 31 is electrically connected to the first crack detection signal line 75, and the other end of the sub-crack detection signal line 71 is electrically connected to the first crack detection signal line 75; the sub power supply voltage signal line 72 forms a loop and is electrically connected to the first power supply voltage signal line 51, and the sub control signal line 73 forms a loop and is electrically connected to the first control signal line 76;

the dummy signal line 74 electrically connects the sub crack detection signal line 71 and the sub control signal line 73.

Specifically, the external esd protection device 63 disposed in the vacant region 70 of the cutting panel 200, i.e. outside the lower cutting line 99, includes the esd protection circuit 631 shown in fig. 11, i.e. the esd protection circuit 631 is used to discharge part of the static electricity on the crack detection signal line 31. The ESD protection circuit 631 comprises at least a sub-power voltage signal line 72, a sub-crack detection signal line 71, a sub-control signal line 73, and a plurality of dummy signal lines 74; the crack detection unit 32 in the first sub non-display area in the display panel 100 includes one first power voltage signal line 51, at least one first crack detection signal line 75, and one first control signal line 76.

The specific electrical connection mode of the electrostatic protection circuit 631 and the crack detection circuit is as follows: one output end 62 of the crack detection signal line 31 in the crack detection circuit is electrically connected to one end of the corresponding crack detection signal line 71 in the electrostatic protection circuit 631, one output end of the crack detection signal line 31 in the first sub non-display area is electrically connected to the first crack detection signal line 75, and the other end of the crack detection signal line 71 in the electrostatic protection circuit 631 is also electrically connected to the first crack detection signal line 75. The sub power supply voltage signal line 72 forms a loop in the vacant region 70 and is electrically connected to the first power supply voltage signal line 51, and the sub control signal line 73 forms a loop in the vacant region 70 and is electrically connected to the first control signal line 76; meanwhile, the plurality of dummy signal lines 74 electrically connect the sub crack detection signal lines 71 and the sub control signal lines 73, and at least part of static electricity on the sub crack detection signal lines 71 and the sub control signal lines 73 and the signal lines in the display panel 100 to which the sub crack detection signal lines 71 and the sub control signal lines 73 are electrically connected is discharged through the dummy signal lines 74 for protecting the normal operation capability of the relevant signal lines.

It should be noted that a plurality of binding terminals, such as the binding terminal 91/92/93/94/95/96/97/98 shown in fig. 11, are further included in the non-display area of the display panel, wherein the binding terminal 91/92/93 is used to electrically connect the second sub-control signal line 821/822/823 in the second control signal line unit 82, the binding terminal 94/95/96 is used to electrically connect the second sub-pixel driving line 831/832/833 in the second pixel driving line unit 83, and the binding terminal 97/98 is used to electrically connect the first control signal line 76 and the first power voltage signal line 51, respectively. Since most of the static electricity existing in the circuit of the crack detection unit 32 will enter the circuit from the binding terminal, in the solution shown in fig. 11 of the present application, the external static electricity protection element 63 is electrically connected to the binding terminal 97/98 and is disposed close to the side of the binding terminal 97/98, which is beneficial to enhance the discharge of the static electricity charges existing in the binding terminal 97/98 and the first control signal line 76 and the first power voltage signal line 51.

It should be noted that the plurality of dummy signal lines 74 in the external esd protection element 63 also function as a capacitor module, and are used for discharging electrostatic charges existing in the first control signal line 76, the first crack detection signal line 75, and the first power supply voltage signal line 51, so as to avoid the crack detection circuit 30 from being damaged by electrostatic shock, so as to maintain normal transmission of voltage signals in the display panel 100, and ensure the accuracy of crack detection circuit 30 in crack detection.

Fig. 12 is another enlarged view of the Y area in fig. 10 provided in the embodiment of the present application, referring to fig. 10 and fig. 12, optionally, the electrostatic protection circuit 631 further includes a first control signal line unit 80 and a first pixel driving line unit 81, where the first control signal line unit 80 includes a plurality of first sub-control signal lines 801/802/803, and the first pixel driving line unit 81 includes a plurality of first sub-pixel driving lines 811/812/813;

a second control signal line unit 82 and a second pixel driving line unit 83 are further included between the crack detection unit 32 and the display area 10, the second control signal line unit 82 includes second sub-control signal lines 821/822/823 corresponding to the first sub-control signal lines 801/802/803 one to one, and the second pixel driving line unit 83 includes second sub-pixel driving lines 831/832/833 corresponding to the first sub-pixel driving lines 811/812/813 one to one;

any one of the first sub-control signal lines 801/802/803 forms a loop to be electrically connected to the corresponding second sub-control signal line 821/822/823, and any one of the first sub-pixel driving lines 811/812/813 forms a loop to be electrically connected to the corresponding second sub-pixel driving line 831/832/833;

the dummy signal line 74 is also electrically connected to the first sub-control signal line 801/802/803 and the first sub-pixel driving line 811/812/813.

Referring to fig. 10 and 12, in particular, based on the circuit design in the lower border area of the non-display area 20 of the display panel 100, the esd protection circuit 631 may further include a first control signal line unit 80 and a first pixel driving line unit 81 on the basis of the sub-power voltage signal line 72, the sub-crack detection signal line 71, the sub-control signal line 73 and the virtual signal lines 74, wherein the first control signal line unit 80 includes a plurality of first sub-control signal lines 801/802/803, the first pixel driving line unit 81 includes a plurality of first sub-pixel driving lines 811/812/813, and the first sub-pixel driving line 35 811/812/813 includes, for example, a red sub-pixel driving line, a green sub-pixel driving line and a blue sub-pixel driving line.

In the first sub non-display area, a second control signal line unit 82 and a second pixel driving line unit 83 are further included between the crack detection unit 32 and the display area 10, wherein the second control signal line unit 82 includes second sub-control signal lines 821/822/823 corresponding to the first sub-control signal lines 801/802/803 one to one, and the second pixel driving line unit 83 includes second sub-pixel driving lines 831/832/833 corresponding to the first sub-pixel driving lines 811/812/813 one to one, that is, the second sub-pixel driving lines 831/832/833 include a plurality of red sub-pixel driving lines, green sub-pixel driving lines, and blue sub-pixel driving lines.

Also included in the non-display area of the display panel are a plurality of binding terminals, such as binding terminal 91/92/93/94/95/96/97/98 shown in fig. 12, binding terminal 91/92/93 for electrically connecting a first sub-control signal line 801/802/803 in a corresponding first control signal line unit 80 and a second sub-control signal line 821/822/823 in a second control signal line unit 82, binding terminal 94/95/96 for electrically connecting a first sub-pixel driving line 811/812/813 in a corresponding first pixel driving line unit 81 and a second sub-pixel driving line 831/832/833 in a second pixel driving line unit 83, binding terminal 97 for electrically connecting a corresponding first control signal line 76 and sub-control signal line 73, and binding terminal 98 for electrically connecting a corresponding first supply voltage signal line 51 and sub-supply voltage signal line 72. Since most of the static electricity existing in the circuit of the crack detection unit 32 will enter the circuit from the binding terminal, in the solution shown in fig. 12, the external static electricity protection component 63 is electrically connected to the binding terminal and is disposed close to the side where the binding terminal is located, which is beneficial to enhance the discharge of the static electricity charges existing in the binding terminal and the second sub-control signal line 821/822/823, the second sub-pixel driving line 831/832/833, the first control signal line 76, the first power voltage signal line 51 and the first crack detection signal line 75 electrically connected thereto.

Any one of the first sub-control signal lines 801/802/803 disposed in the empty region 70 forms a loop and is electrically connected to a corresponding one of the second sub-control signal lines 821/822/823 disposed in the first sub-non-display region 201; any one of the first sub-pixel driving lines 811/812/813 disposed in the empty region 70 forms a loop and is electrically connected to a corresponding one of the second sub-pixel driving lines 831/832/833 disposed in the first sub-non-display region 201; and thereby electrically connects the partial dummy signal line 74 to the first sub-control signal line 801/802/803 and the first sub-pixel driving line 811/812/813. That is, in addition to discharging at least part of static electricity on the sub crack detection signal line 71 and the sub control signal line 73 through the dummy signal line 74 and the signal lines in the display panel 100 to which the sub crack detection signal line 71 and the sub control signal line 73 are electrically connected, at least part of static electricity on the first sub control signal line 801/802/803 and the first sub pixel driving line 811/812/813, and the signal lines in the display panel 100 to which the first sub control signal line 801/802/803 and the first sub pixel driving line 811/812/813 are electrically connected is discharged through the dummy signal line 74, thereby further protecting the normal operation capability of the relevant signal lines.

That is, the plurality of dummy signal lines 74 in the external esd protection device 63 also function as a capacitor module, and are used for releasing electrostatic charges in the non-display area circuit of the display panel and maintaining the normal transmission of the voltage signal in the display panel 100.

Referring to fig. 6 and 10, optionally, the display area 10 includes a plurality of data lines (not shown) extending along the second sub non-display area 202 toward the first sub non-display area 201, the non-display area 20 includes a power voltage driving signal line (directly shown as 51) for transmitting a driving signal to the data lines, and the power voltage driving signal line is multiplexed into the first power voltage signal line 51.

Specifically, the display area 10 of the display panel 100 includes a plurality of data lines extending along the direction in which the second sub non-display area 202 points to the first sub non-display area 201, and the first sub non-display area 201 includes a power supply voltage driving signal line for transmitting a driving signal to the data lines, in this application, the power supply voltage driving signal line can be multiplexed into the first power supply voltage signal line 51, so that the number of required traces in the non-display area 20 can be reduced, and the narrow frame design of the display panel 100 is facilitated.

Fig. 13 is an enlarged view of a region Y in fig. 10 according to an embodiment of the present application, and referring to fig. 10 and 13, optionally, the external esd protection device 63 includes at least one esd protection capacitor module 331; one output end 62 of the crack detection signal line 31 is electrically connected to one end of the esd protection capacitor module 331, and the other end of the esd protection capacitor module 331 is electrically connected to the first crack detection signal line 75.

Specifically, the external esd protection component 63 may be configured to include at least one esd protection capacitor module 331 in addition to the esd protection circuit 631, where the esd protection capacitor module 331 is the aforementioned esd protection capacitor module 331. One end of the electrostatic protection capacitor module 331 disposed in the vacant region 70 is electrically connected to one output end 62 of the crack detection signal line 31, the other end of the electrostatic protection capacitor module 331 is electrically connected to the first crack detection signal line 75, and one end of the electrostatic protection capacitor module 331 is electrically connected to the first power supply voltage signal line 51; similarly, the capacitor element inside the esd protection capacitor module 331, or the capacitor element and the first capacitor, are used to store and discharge part of the static electricity in the crack detection signal line 31 electrically connected thereto. It should be noted that, the first power voltage signal line 51 is used to transmit a stable voltage to the capacitor plate of the electrostatic protection capacitor module 331 electrically connected thereto, when there is an electrostatic charge in the crack detection signal line 31, a certain voltage difference is generated between the capacitor plate of the electrostatic protection capacitor module 331 electrically connected to the crack detection signal line 31 and the capacitor pole of the electrostatic protection capacitor module 331 electrically connected to the first power voltage signal line 51, so that the electrostatic protection capacitor module 331 can be used to store the electrostatic charge existing on the crack detection signal line 31, and slowly release a part of the electrostatic charge existing on the crack detection signal line 31; the method is beneficial to realizing the release of at least part of static electricity in the gate drive circuit, avoiding the abnormality of the crack detection circuit 30 caused by the electrostatic damage of the crack detection circuit 30, maintaining the normal transmission of voltage signals in the display panel 100 and ensuring the accuracy of crack detection of the crack detection circuit 30.

Referring to fig. 2-5 in conjunction with fig. 10 and fig. 13, the esd protection capacitor module shown in fig. 12 may be the esd protection capacitor module shown in any one of fig. 2-5; optionally, any esd protection capacitor module 331 includes at least one capacitor element 34; in the light emitting direction of the display panel 100, the cutting panel 200 includes a substrate 41, and an active layer 42, a first metal layer 43 and a second metal layer 44 sequentially disposed on the substrate 41; at least part of the active layer 42 and at least part of the first metal layer 43 form the capacitive part 34, and/or at least part of the first metal layer 43 and at least part of the second metal layer 44 form the capacitive part 34;

an output end 62 of the crack detection signal line 31 is electrically connected to the first metal layer 43 of the esd protection capacitor module 331, and the first metal layer 43 of the esd protection capacitor module 331 is electrically connected to the first crack detection signal line 75.

Specifically, any one of the esd protection capacitor modules 331 located in the vacant areas 70 includes at least one capacitor element 34, and in addition, a first capacitor 50 may be added on the basis of the capacitor element 34, so as to increase the capability of the esd protection capacitor module 331 to discharge the static electricity existing in the crack detection signal line 31.

The film structure of the cutting panel 200 may be substantially the same as the film structure of the display panel 100, and in the light emitting direction of the display panel 100, the cutting panel 200 includes a substrate 41, and an active layer 42, a first metal layer 43, and a second metal layer 44 sequentially disposed on one side of the substrate 41, where at least a portion of the first metal layer 43 and at least a portion of the active layer 42 have an overlapping region on the substrate 41 to form the capacitor 34, or the capacitor 34 may also be formed in an overlapping region on the substrate 41 for at least a portion of the first metal layer 43 and at least a portion of the second metal layer 44. And then, the active layer 42 and the second metal layer 44 are electrically connected, so that the capacitor element 34 formed by at least part of the first metal layer 43 and at least part of the active layer 42, and the capacitor element 34 formed by at least part of the first metal layer 43 and at least part of the second metal layer 44 are electrically connected, thereby forming a complete esd protection capacitor module 331.

In addition, the cutting panel 200 may further include a third metal layer 46 located on a side of the second metal layer 44 away from the first metal layer 43, where at least a portion of the third metal layer 46 and at least a portion of the first metal layer 43 form a first capacitor 50, so that the third metal layer 46 and the second metal layer 44 are electrically connected, and the first capacitor 50 and the capacitor element 34 are electrically connected to form a complete esd protection capacitor module 331, thereby further increasing an esd releasing capability of the esd protection capacitor module 331 for the crack detection signal line 31 electrically connected thereto.

As for the electrical connection relationship between the crack detection circuit 30 and the esd protection capacitor module 331 in the vacant area 70, specifically, one output end 62 of the crack detection signal line 31 is electrically connected to the first metal layer 43 of the esd protection capacitor module 331 in the vacant area 70, the first metal layer 43 of the esd protection capacitor module 331 is simultaneously electrically connected to the first crack detection signal line 75, and the second metal layer 44 of the esd protection capacitor module 331 is electrically connected to the first power voltage signal line 51; therefore, static electricity existing in the crack detection circuit 30 is further released by using the electrostatic protection capacitor module 331, which is beneficial to preventing the crack detection circuit 30 from being abnormal due to electrostatic damage to the crack detection circuit 30, and further ensuring the accuracy of crack detection by the crack detection circuit 30.

It should be noted that, the first power voltage signal line 51 is used to transmit a stable voltage to the capacitor plate of the electrostatic protection capacitor module 331 electrically connected thereto, when there is an electrostatic charge in the crack detection signal line 31, a certain voltage difference is generated between the capacitor plate of the electrostatic protection capacitor module 331 electrically connected to the crack detection signal line 31 and the capacitor pole of the electrostatic protection capacitor module 331 electrically connected to the first power voltage signal line 51, so that the electrostatic protection capacitor module 331 can be used to store the electrostatic charge existing on the crack detection signal line 31, and slowly release a part of the electrostatic charge existing on the crack detection signal line 31; the method is beneficial to realizing the release of at least part of static electricity in the gate drive circuit, avoiding the abnormality of the crack detection circuit 30 caused by the electrostatic damage of the crack detection circuit 30, maintaining the normal transmission of voltage signals in the display panel 100 and ensuring the accuracy of crack detection of the crack detection circuit 30.

Fig. 14 is a further enlarged view of the area Y in fig. 10 according to an embodiment of the present disclosure, and fig. 15 is a further enlarged view of the area Y in fig. 10 according to an embodiment of the present disclosure, please refer to fig. 10, fig. 13 to fig. 15, and further refer to fig. 2 to fig. 5, optionally, the external esd protection device 63 includes a first esd protection capacitor module 3311 and a second esd protection capacitor module 3312, and the first esd protection capacitor module 3311 and the second esd protection capacitor module 3312 are connected in series.

Specifically, for the external esd protection component 63 disposed outside the lower cutting line 99 in the empty region 70 of the cutting panel 200, one external esd protection component 63 may also be disposed to include a first esd protection capacitor module 3311 and a second esd protection capacitor module 3312, and the first esd protection capacitor module 3311 and the second esd protection capacitor module 3312 are connected in series, specifically, two esd protection capacitor modules 331 are connected in series through the first metal layer 43.

It should be noted that the structures of the external esd protection devices in the empty regions shown in fig. 13-15 are only a single embodiment provided in the present application, and those skilled in the art can modify the structures according to the actual design requirements, and the designs are within the scope of the present invention as long as the static electricity inside the panel is discharged by using the esd protection capacitor module placed in the empty region.

The display panel provided by the present application can be used for: any product and component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a vehicle-mounted display screen, a navigator and the like.

By the embodiment, the display panel and the cutting panel provided by the invention at least realize the following beneficial effects:

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display panel is characterized by comprising a display area and a non-display area surrounding the display area, wherein the non-display area comprises at least one crack detection circuit, any crack detection circuit comprises a crack detection signal line, a crack detection unit and at least one built-in electrostatic protection element, and the built-in electrostatic protection element is electrically connected with the crack detection signal line;

2. The display panel of claim 1, wherein any of the ESD protection capacitor modules comprises at least one capacitor element;

along the light emitting direction of the display panel, the display panel comprises a substrate, and an active layer, a first metal layer and a second metal layer which are sequentially arranged on the substrate; at least part of the active layer and at least part of the first metal layer form the capacitive part, and/or at least part of the first metal layer and at least part of the second metal layer form the capacitive part;

wherein the active layer and the second metal layer are electrically connected through a first via.

3. The display panel of claim 2, wherein any of the ESD protection capacitor modules further comprises a first capacitor;

the display panel comprises a third metal layer located on one side, far away from the first metal layer, of the second metal layer, at least part of the third metal layer and at least part of the first metal layer form the first capacitor, and the third metal layer and the second metal layer are electrically connected through a second through hole.

4. The display panel according to claim 2 or 3, wherein the ESD capacitance module is electrically connected to the crack detection signal line through at least two connection signal lines;

the connection signal line is arranged on the second metal layer and is electrically connected with the first metal layer of the electrostatic protection capacitor module through a third through hole.

5. The display panel according to claim 4, wherein the crack detection unit comprises a first power voltage signal line, and the second metal layer of the ESD protection capacitor module is electrically connected to the first power voltage signal line.

6. The display panel according to claim 4, wherein the non-display region further comprises a plurality of cascaded gate driving circuits, the gate driving circuits comprise a second power voltage signal line, and the second metal layer of the ESD protection capacitor module is electrically connected to the second power voltage signal line.

7. The display panel according to claim 4, wherein the crack detection signal line includes a first sub-crack detection signal line and a second sub-crack detection signal line, the second sub-crack detection signal line is located between the display area and the first sub-crack detection signal line, and one end of the first sub-crack detection signal line and one end of the second sub-crack detection signal line are electrically connected;

any built-in electrostatic protection element comprises a first electrostatic protection capacitor module and a second electrostatic protection capacitor module, wherein the first electrostatic protection capacitor module is electrically connected with the first sub-crack detection signal line, and the second electrostatic protection capacitor module is electrically connected with the second sub-crack detection signal line.

8. The display panel of claim 7, wherein the first ESD protection capacitor module and the second ESD protection capacitor module of at least one of the ESD protection devices are connected in parallel.

9. The display panel according to claim 4, wherein the non-display region includes two of the crack detection circuits, the two crack detection circuits being symmetrically disposed along a first axis;

the display area comprises a plurality of data lines extending along the direction of the second sub non-display area pointing to the first sub non-display area, wherein the first axis is parallel to any one of the data lines and bisects the display area along the direction perpendicular to the data lines.

10. The display panel according to claim 9, wherein any of the crack detection circuits includes one of the built-in electrostatic protection elements in the second sub non-display area, the built-in electrostatic protection element being located on a side of the crack detection signal line close to the first axis.

11. The display panel according to claim 1, wherein a distance between two adjacent built-in electrostatic protection elements in an extending direction of the crack detection signal line is D1, 500 μm ≦ D1 ≦ 1000 μm.

12. The display panel of claim 1, wherein the width of any one of the built-in ESD elements in the direction perpendicular to the extension direction of the crack detection signal line is D2, 20 μm D2 μm 30 μm.

13. The display panel according to claim 1, wherein at least a part of the built-in electrostatic protection element is located on a side of the crack detection signal line close to the display area.

14. A cut panel, characterized in that the cut panel comprises a display panel according to any one of claims 1-13;

15. The cutting panel of claim 14, wherein the external electrostatic protection element comprises an electrostatic protection circuit, the electrostatic protection circuit comprising a sub power supply voltage signal line, a sub crack detection signal line, a sub control signal line, and a plurality of dummy signal lines;

the crack detection unit comprises a first power supply voltage signal line, at least one first crack detection signal line and a first control signal line;

one of the output ends of the crack detection signal line is electrically connected to one end of the sub-crack detection signal line, the other output end of the crack detection signal line is electrically connected to the first crack detection signal line, and the other end of the sub-crack detection signal line is electrically connected to the first crack detection signal line; the sub power supply voltage signal line forms a loop and is electrically connected with the first power supply voltage signal line, and the sub control signal line forms a loop and is electrically connected with the first control signal line;

the virtual signal line electrically connects the sub crack detection signal line and the sub control signal line.

16. The cutting panel of claim 15, wherein the esd protection circuit further comprises a first control signal line unit and a first pixel driving line unit, the first control signal line unit comprises a plurality of first sub-control signal lines, and the first pixel driving line unit comprises a plurality of first sub-pixel driving lines;

a second control signal line unit and a second pixel driving line unit are further included between the crack detection unit and the display area, the second control signal line unit comprises second sub-control signal lines in one-to-one correspondence with the first sub-control signal lines, and the second pixel driving line unit comprises second sub-pixel driving lines in one-to-one correspondence with the first sub-pixel driving lines;

any one of the first sub-control signal line forming loops is electrically connected with the corresponding second sub-control signal line, and any one of the first sub-pixel driving line forming loops is electrically connected with the corresponding second sub-pixel driving line;

the dummy signal line is also electrically connected to the first sub-control signal line and the first sub-pixel driving line.

17. The cutting panel of claim 15, wherein the display region includes a plurality of data lines extending in a direction in which the second sub non-display region is directed to the first sub non-display region, and the non-display region includes a power voltage driving signal line transmitting a driving signal to the data lines, the power voltage driving signal line being multiplexed as the first power voltage signal line.

18. The cutting panel as claimed in claim 14, wherein the external esd protection component comprises at least one esd protection capacitor module; one of the output ends of the crack detection signal lines is electrically connected with one end of the electrostatic protection capacitor module, and the other end of the electrostatic protection capacitor module is electrically connected with the first crack detection signal line.

19. The cutting panel of claim 18, wherein any of the esd protection capacitor modules comprises at least one capacitor element; in the light emitting direction of the display panel, the cutting panel comprises a substrate, and an active layer, a first metal layer and a second metal layer which are sequentially arranged on the substrate; at least part of the active layer and at least part of the first metal layer form the capacitive part, and/or at least part of the first metal layer and at least part of the second metal layer form the capacitive part;

one of the output ends of the crack detection signal line is electrically connected with the first metal layer of the electrostatic protection capacitor module, and the first metal layer of the electrostatic protection capacitor module is electrically connected with the first crack detection signal line.

20. The cutting panel as claimed in claim 18, wherein the external ESD protection device includes a first ESD capacitor module and a second ESD capacitor module, the first ESD capacitor module and the second ESD capacitor module being connected in series.